Évaluations - 1, GPA: 5
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Facilité d'utilisation
- c”~ ” D E “ 7-8^ 6- 0% 2-113/i6 0-11’/7 5^ FPT 7-3?] 6 6-11 2-5% 0-105/s V MPT 0-6 - L 1 o i "(|05> ' “ 1 6-9 8 (110 )—H 1 - 1 A 'l20> ^"E SIZE COOLER DRAIN L 1 i i" 1 — 7 -7 \ MTG HOLES-*\ -- 7-7-I"(085)-- 7'-7-g- MTG HOLES- 20-6 MTG HOLES - SIDE VIEW LEGEND for Fig. 1 (callouts) 1 — Electrical box, circuit 1 9 2 — Electrical box, circuit 2 10 3 — Unit control box 11 4 — Compressor (1 and 2, circuit 1; 3 and 4, circuit 2) 12 5 — Condenser coils 13 6 — Removable access panels (each end) 7 — Removable access panels (each side) 14 8 — 4-5/8 in diam hole in comer'post (farside) Main 15 power supply, circuit 1 — 4-5/8 in diam hole in corner post Main power supply, circuit 2 — 3-in FPT straight pipe in electrical box Power supply, Ckt 1 — 3-in FPT straight pipe in electrical box Power supply, Ckt 2 — 3 — 1-in diam holes in corner post Control power and field interlocks — 3 — 1-in diam holes in corner post (in line vertically) Control power and field interlocks — 2 — 7/8-in diam knockouts in control box Field interlocks — 7/8-in diam hole in control box Control power supply Fig. 1 — Dimension Drawing © Carrier Corporation 1979 Form 30GA-23SI Table 1 — Weight Distribution UNIT 30GA 085 105 110 -> 120 CG DIM. APPROX .... SUPPORT POINT (See Diagram) (in.) OPER WT 2 3 4 5 6 7 8 A B (lb) Weight (lb) 47 129 9,200 “950 950 1320 1380 1320 1380 *950 45 129 10,350 1130 1030 1550 1465 1550 1465 1130 1030 45 129 10,480 1150 1050 1560 1480 1560 1480 1150 1050 45 129 10,720 1190 1090 1590 1490 1590 1490 1190 1090 CG — Center of Gravity NOTE: Support points 1 - 8 are at mounting holes in the base rail flange 02 C0MPR COMPR o4 h CG -j- 06 — B 08 COMPR COOLER COMPR INSTALLATION Rigging — The recommended method of rigging these units is with 2 field-supplied pipes thru the holes at the ends of the base frame. Use 2-1/2 in. standard weight pipes 10 ft long. Four cables, minimum of 20 ft long, hooked around the pipe ends with two 98-in. long spreaders should keep the cables clear of the unit sides (see rigging label on side of unit). Placing the Unit — The unit may be positioned with a crane while the rigging is still on or it can be moved on the surface. If positioned from above, remove the rail skids before placing. If the unit is dragged into position, leave the skid rails on until final placement. If the unit is rolled into position, remove the skid rails before placing the rollers. Use minimum of 3 rollers to distribute the load. If the unit is to rest on pads or if special floor or roof supports are required, locate the supports with respect to weight distribution shown in Table 1. The unit must be located with a minimum clearance of 5 ft on the sides and 10 ft at the ends for servicing and for airflow. There must be no restriction of any kind above the unit. Compressor Mounting — The 2 compressors at each end are mounted rigidly on a double-rail base. The base is mounted on springs at 6 points, 3 under each rail. For shipping, 6 bolts thru these springs hold the compressors secure. At installation, remove the 6 bolts so that the compressor-rail assembly floats freely on the springs. Chilled Water and Drain Piping (See Fig. 1) — Facing the cooler side of the unit, the return water connection is at the right and the leaving water connection at the left. At installation, holes must be cut in the metal screen for field piping and insulation. After installation, all field piping should be protected against freezing. This includes electric heating tapes covered with a suitable thickness of closed-cell insulation, or an ethylene glycol solution may be used. On 60-Hz units, a 115 volt convenience outlet is provided as the power source for the pipe heaters. A chilled water flow switch is factory-installed in the cooler return water nozzle. The drain connection is located at the leaving water end of the cooler. Power Supply — Electrical characteristics of avail- able power supply must agree with unit nameplate rating. Supply voltage must be within the limits shown in Table 2. Operation of unit on improper supply voltage or with excessive phase unbalance constitutes abuse and is not covered by Carrier warranty Field Power Connections — All power wiring must comply with applicable local and national codes. Install field-supplied branch circuit disconnects of a type that can be locked OFF or OPEN. MAIN POWER — The electrical box at each end of the unit contains components and wiring for one of the 2 circuits. Separate power wires go to each box, entering the unit thru the large holes in the corner posts (see Fig. 1). The main power wires are connected to terminals in electrical boxes. (TB1 in Circuit 1 and TB2 in Circuit 2). The terminal block connectors are suitable for either copper or aluminum wire up to 500 MCM. Check fan rotation. The correct direction is clockwise, viewed from above. If rotation is in the wrong direction, interchange 2 of the po...